Conrad Verner

Conrad Verner first appeared in Mass Effect as a fan of Commander Shepard. At first he seemed harmless, but gradually became more obsessed with being like Shepard to the point of asking to join his team (Shepard turns him down nicely or harsly, depending on your choice). In Mass Effect 2 he appears on Illium, impersonating Shepard in a full set of fake N7 armor. He proclaims he will stop at nothing to protect the galaxy, but he couldn't protect a defenseless kitten.

Conrad does not appear in Mass Effect 2 if he was not encountered in Mass Effect.

Conrad Verner in Mass Effect 3

You can prevent Verner from dying only if you ALSO imported a save where you helped Jenna from Chora's Den in Mass Effect. She will appear as Conrad Verner's girlfriend, and the gun used to shoot him will be fake.